Like GVH Fish Food Soak, this product contains Garlic, Vitamins and HUFAs. However, it is made especially for soaking seaweed fish foods so we do not add the micro-algae (phyto-plankton) component. We use a very rich extract from fresh garlic that readily soaks into dry seaweed. Many marine hobbyists swear by the beneficial effects of garlic when used to prevent or even eliminate diseases caused by harmful micro-organisms.